All-terrain tire with high comfort level, high road holding capacity and low noise

Abstract

The utility model discloses an all-terrain tire with high comfort, high road holding capacity and low noise, which comprises reinforcing rubber arranged between a cord fabric layer and sidewall rubber, the radial end of the reinforcing rubber and a belted layer have an overlapping area, and the axial projection of the reinforcing rubber can cover the deformation area of the sidewall. And the hardness of the reinforcing rubber is greater than that of the sidewall rubber and the cord fabric layer. According to the utility model, the reinforcing rubber is arranged between the cord fabric layer and the sidewall rubber to realize the balance of the bearing capacity and the damping capacity of the sidewall, and the closed reinforcing ribs are arranged in the transverse full patterns to form the closed cavity, so that the noise of the tire main body during driving is reduced; the axial reinforcing ribs are arranged in the transverse half patterns, so that the contact area between the tire crown and the road surface is increased, and the road gripping capacity of the tire is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tire, specifically relates to a high comfort, high ground -hugging ability, low noise all terrain tire. BACKGROUND

[0002] Off-road tire and highway tire are two kinds of tire types with completely different design purposes, which are optimized for different driving environments. The advantages of off-road tire are that the tread pattern is deep to improve its ground-hugging ability, and the tire side is reinforced to improve its load-carrying capacity. The disadvantages are that the noise is large when driving on the highway, and the application scenarios are desert, muddy ground, ice surface, mountainous area, etc. The advantages of highway tire are that the tread pattern is moderate to improve its handling and comfort, the noise is small, and the drainage capacity is good. The application scenarios are urban driving and long-distance travel.

[0003] With the improvement of living standards, more and more people choose to drive themselves during their leisure time. Most of the roads during the trip are flat highways, but there are also a small part of muddy ground, ice surface and other road surfaces. The safety of highway tire driving on this road condition is less than that of off-road tire driving on this road condition, but the comfort of off-road tire in self-driving is lower than that of highway tire. Therefore, a kind of all terrain tire is needed, which can be used in harsh road conditions and on the highway.

[0004] The existing utility model patent CN213322522U discloses an MT tire suitable for highway and off-road driving at the same time, which comprises a crown, a left shoulder and a right shoulder arranged on the tire body. The left shoulder is located on the left side of the crown, and the right shoulder is located on the right side of the crown. The crown pattern block in the utility model can better inlay with the complex off-road surface, and improve the ground adhesion of the tire on the complex road surface. The shoulder transverse pattern groove and the shoulder pattern block are designed in a crisscross manner, which improves the self-cleaning ability and driving force of the tire. The patent only improves the off-road performance, but does not improve the comfort, which cannot meet the requirements of people for all terrain tires. UTILITY MODEL CONTENT

[0005] The utility model discloses a kind of high comfort, high ground -hugging ability, low noise all terrain tire to solve the ground adhesion of all terrain tire, comfort, noise problem, specific technical solutions are as follows:

[0006] The utility model discloses a tire body, the tire body includes cord layer, tire side rubber and belt strip, the belt strip is sequentially provided with four layers, tire body further includes the reinforcing rubber between cord layer and tire side rubber, the reinforcing rubber has coincident area with belt strip along radial direction one end, the projection of reinforcing rubber along axial direction can cover the deformation area of tire side, the hardness of reinforcing rubber is greater than the hardness of tire side rubber and cord layer.

[0007] Further, the minimum distance between the end point of the radial direction of the reinforcing rubber and the end point of the belt is W1, 10mm≤W1≤20mm; and the radial diameter of the other end point of the radial direction of the reinforcing rubber is greater than the radial diameter of the outer wrapping end point of the cord layer, and the distance between the other end point of the radial direction of the reinforcing rubber and the outer wrapping end point of the cord layer is W2, 5mm≤W2≤10mm.

[0008] Preferably, the thickness of the two ends of the reinforcing rubber is the same and is 0.4-0.6mm, and the axial thickness of the reinforcing rubber in the deformation area of the sidewall is 2-3.5mm.

[0009] Preferably, the contact patch rectangularity of the tire body is 70%-85%.

[0010] Preferably, the tread pattern further comprises: at least two annular patterns formed on the circumferential surface of the crown, the annular patterns being connected end to end, the annular patterns being parallel to each other, and the annular patterns being grooves capable of draining water; a transverse full pattern formed on the circumferential surface of the crown, the transverse full pattern extending through the crown in the axial direction, and the transverse full pattern being a groove in communication with all the annular patterns; and a transverse half pattern formed on the circumferential surface of the crown, the transverse half pattern being a groove in communication with a single annular pattern at one end and in communication with the external environment at the other end.

[0011] Preferably, the intersection position of the transverse full pattern and the shoulder forms a closed reinforcing rib, the two end faces of the closed reinforcing rib coincide with the inner side faces of the transverse full pattern respectively, and the ratio of the radial height of the closed reinforcing rib to the radial depth of the transverse full pattern is 40%-60%.

[0012] Preferably, the crown forms an axial reinforcing rib at the bottom face of the transverse half pattern, the length direction of the axial reinforcing rib is the axial direction of the tire body, the ratio of the radial height of the axial reinforcing rib to the radial depth of the transverse half pattern is 20%-30%, and the thickness of the axial reinforcing rib is 1.5-2.5mm.

[0013] Preferably, the tread pattern further comprises water absorption grooves formed on the circumferential surface of the crown, the length direction of the water absorption grooves is the axial direction of the tire body, the width of the water absorption grooves is 0.6-1mm, the length of the water absorption grooves is a zigzag design, the water absorption grooves are parallel to each other, and the water absorption grooves are in communication with the annular patterns.

[0014] Preferably, the tread pattern further comprises: shoulder grooves uniformly distributed at the shoulder position, the radial section of the shoulder grooves is an arc shape with the opening facing the external environment; and shoulder protrusions uniformly distributed at the shoulder position, the radial section of the shoulder protrusions is a triangle with the apex falling on the shoulder point, and the shoulder grooves and the shoulder protrusions are alternately and uniformly distributed at the shoulder position.

[0015] From the above technical scheme can know, the utility model has the following beneficial effects:

[0016] The utility model discloses a reinforcing rubber is arranged between the cord layer and the side rubber, realizes the balance of the side load bearing capacity and the shock absorbing capacity, then sets up the closed reinforcing rib in the transverse full pattern and forms the closed cavity, further reduces the noise of tire main body when driving, then sets up the axial reinforcing rib in the transverse half pattern and increases the contact area of the crown and the road, then increases its grip capacity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the cross section view of the tire main body of the utility model embodiment along the radial direction;

[0018] Figure 2 It is the schematic diagram of the tread pattern structure of the utility model embodiment;

[0019] Figure 3 It is the actual picture of the tread pattern.

[0020] In the drawing: 1, tire main body;11, crown;12, shoulder;13, side;14, bead;15, cord layer;16, side rubber;17, reinforcing rubber;2, tread pattern;21, annular pattern;22, transverse full pattern;23, transverse half pattern;24, closed reinforcing rib;25, axial reinforcing rib;26, shoulder recess;27, shoulder protrusion;28, water absorption recess. DETAILED DESCRIPTION

[0021] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings of the utility model embodiments, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] In the description of the utility model embodiments, it is necessary to explain that the directions or position relations indicated by the terms "in", "out", "up" and the like are based on the directions or position relations shown in the drawings, or are the directions or position relations of the utility model product when usually placed, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0023] As Figure 1 The present embodiment includes a tire main body 1, which includes a cord layer 15, a side rubber 16, and a belt layer, which is sequentially provided with four layers.

[0024] As known in the art, the tire body 1 comprises a tire side 13, which sequentially distributes a cord layer 15 and a tire side rubber 16 along an axial direction, and a tire crown 11, which sequentially distributes four belt layers along a radial direction.

[0025] Further, the tire body 1 further comprises a reinforcing rubber 17 arranged between the cord layer 15 and the tire side rubber 16, one end of the reinforcing rubber 17 along the radial direction overlaps with the belt layer, a projection of the reinforcing rubber 17 along the axial direction can cover a deformation area of the tire side 13, and a hardness of the reinforcing rubber 17 is greater than hardnesses of the tire side rubber 16 and the cord layer 15.

[0026] Specifically, end faces of the two ends of the reinforcing rubber 17 along the radial direction are connected with the cord layer 15 and the tire side rubber 16 respectively, so that the tire side 13 sequentially distributes the cord layer 15, the reinforcing rubber 17 and the tire side rubber 16 along the axial direction; secondly, one end of the reinforcing rubber 17 close to the tire crown 11 is arranged between the belt layers, so that the belt layer can constrain a top end of the reinforcing rubber 17, thereby avoiding that the top end of the reinforcing rubber 17 is separated from the tire side 13 or the tire crown 11 when the reinforcing rubber 17 is bent and deformed, and affecting the use of the tire; thirdly, the stiffness of the deformation area of the tire side 13 determines the load capacity of the tire, and the hardness of the reinforcing rubber 17 is greater than that of the tire side rubber 16, so that the stiffness of the deformation area can be strengthened, thereby improving the load capacity of the tire; when the tire is running in the desert, a lower air pressure is usually required to improve the gripping capacity, the reinforcing rubber 17 can ensure the load capacity of the tire, and the characteristics that the reinforcing rubber 17 can be bent and deformed and the tire side rubber 16 and the cord layer 15 have a lower hardness make the tire have a certain shock absorption capacity, thereby improving the comfort of the tire while ensuring the load capacity of the tire.

[0027] In the embodiment, the hardness of the reinforcing rubber 17 is 75HD, the hardness of the cord layer 15 is 55HD, and the hardness of the tire side rubber 16 is 50HD.

[0028] Further, a minimum distance between an end point of one end of the reinforcing rubber 17 along the radial direction and an end point of the belt layer is W1, and 10mm≤W1≤20mm; and a radial diameter of an end point of the other end of the reinforcing rubber 17 along the radial direction is greater than a radial diameter of an outer wrapping end point of the cord layer 15, and a distance between the end point of the other end of the reinforcing rubber 17 along the radial direction and the outer wrapping end point of the cord layer 15 is W2, and 5mm≤W2≤10mm.

[0029] Specifically, when W1<10mm, the reinforcing rubber 17 is easily separated from the cord layer 15, causing the tire damage; when W1>20mm, the reinforcing rubber 17 is easily separated from the cord layer 15, causing the tire damage, and the cord layer 15 is deformed too much under the driving of the reinforcing rubber 17, causing serious heat production and affecting the tire performance.

[0030] Secondly, when W2<5mm, the stress concentration of the two end points is serious, reducing the service life of the sidewall 13; when W2>10mm, the supporting effect of the reinforcing rubber 17 on the sidewall 13 is weakened, reducing the load-carrying capacity of the tire.

[0031] Further, the thickness of the two ends of the reinforcing rubber 17 is 0.4-0.6mm, and the axial thickness of the reinforcing rubber 17 in the deformation area of the sidewall 13 is 2-3.5mm.

[0032] Specifically, the thickness of the two ends of the reinforcing rubber 17 is less than 0.4mm, increasing the processing cost, and the tensile strength of the two ends is insufficient, causing the reinforcing rubber 17 to break in the area where the belt layer separates from the reinforcing rubber 17 when bending and deforming, causing the top end of the reinforcing rubber 17 to lose constraint and easily separate from the tire; the thickness of the two ends of the reinforcing rubber 17 is greater than 0.6mm, causing the elastic force of the two ends of the reinforcing rubber 17 to be greater than the binding force of the belt layer and the binding force of the cord layer 15 and the sidewall rubber 16, causing the two ends of the reinforcing rubber 17 to easily separate from the tire, reducing the service life of the tire.

[0033] Secondly, when the axial thickness of the reinforcing rubber 17 is less than 2mm, the hardness of the reinforcing rubber 17 is too low to provide sufficient support to the sidewall 13, reducing the load-carrying capacity of the tire, causing the tire to easily collapse when driving in the desert, affecting the driving experience; when the axial thickness of the reinforcing rubber 17 is greater than 3.5mm, the hardness of the reinforcing rubber 17 is too high, making it difficult to bend and deform to absorb the shock when the tire drives on rough roads, reducing the comfort and affecting the driving experience.

[0034] Further, the contact patch rectangularity of the tire body 1 is 70%-85%.

[0035] Specifically, the rectangularity is positively correlated with the ground contact area of the crown 11. When the rectangularity is less than 70%, the ground contact area of the crown 11 is small, which reduces the ground holding area of the crown 11, and further reduces the ground holding capacity of the tire body 1, which affects the driving of the tire body 1 on the road surface with good ground holding capacity such as desert. When the rectangularity is greater than 85%, the ground contact area of the crown 11 is large, which reduces the speed of the crown 11 to drain the water on the road surface, and further reduces the drainage capacity of the crown 11, and further reduces the ground holding capacity of the crown 11 on the wet land.

[0036] Further, the embodiment further includes a tread pattern 2 formed on the surface of the tire body 1, the tread pattern 2 comprising: at least two annular patterns 21 formed on the circumferential surface of the crown 11, the annular patterns 21 being connected end to end, the annular patterns 21 being parallel to each other, the annular patterns 21 being grooves capable of draining water; a transverse full pattern 22 formed on the circumferential surface of the crown 11, the transverse full pattern 22 extending through the crown 11 in the axial direction, the transverse full pattern 22 being a groove communicating with all the annular patterns 21; and a transverse half pattern 23 formed on the circumferential surface of the crown 11, the transverse half pattern 23 being a groove communicating with a single annular pattern 21 at one end in the axial direction, the other end of the transverse half pattern 23 communicating with the external environment.

[0037] Specifically, there are two annular patterns 21 in the embodiment, which are designed in a zigzag shape, and surround the crown 11 once, so that the tire body 1 can throw the water on the road surface to the rear of the driving direction during rotation, and improve the ground holding capacity of the tire body 1 on the wet land; the transverse full pattern 22 is also designed in a zigzag shape, and communicates the two annular patterns 21, so that it can increase the contact area with the road surface when it contacts the road surface, and improve its ground holding capacity, and secondly, it can drain the water in the annular pattern 21 through the transverse full pattern 22 to both sides of the tire body 1, and improve its drainage capacity; the transverse half pattern 23 is also designed in a zigzag shape, and communicates the annular pattern 21 at one end and the external environment at the other end, so that when the transverse half pattern 23 contacts the road surface, it can form a cavity, and when the tire body 1 drives on the snow or muddy road surface, the cavity can capture and store the snow or mud contacting it, and then rotate with the tire body 1, the transverse half pattern 23 separates from the road surface, and throws the snow or mud in the cavity to the rear, and improves the ground holding capacity of the tire body 1 on the snow or muddy road surface.

[0038] Further, the intersection of the transverse full pattern 22 and the shoulder 12 forms a closed reinforcing rib 24, the two end faces of the closed reinforcing rib 24 respectively coincide with the inner side faces of the transverse full pattern 22, and the height of the closed reinforcing rib 24 in the radial direction accounts for 40%-60% of the depth of the transverse full pattern 22 in the radial direction.

[0039] Specifically, the closed reinforcing rib 24 and the transverse full pattern 22 can form a long strip cavity, when the closed reinforcing rib 24 is in contact with the road surface, the long strip cavity becomes a closed cavity, so that the gas inside cannot flow, thereby reducing the driving noise when the tire body 1 rotates. When the ratio is less than 40%, the closed cavity formed by the closed reinforcing rib 24 and the transverse full pattern 22 is smaller, and it can store less air, so that more air will be discharged, increasing the driving noise; but the ratio is greater than 60%, the closed cavity is too large, although it can store more air, but also store more water, thereby affecting the drainage capacity of the transverse full pattern 22, thereby reducing the grip ability of the tire body 1 on wet road surface.

[0040] Further, the crown 11 forms an axial reinforcing rib 25 on the bottom surface of the transverse half pattern 23, the length direction of the axial reinforcing rib 25 is the axial direction of the tire body 1, the ratio of the height of the axial reinforcing rib 25 along the radial direction to the depth of the transverse half pattern 23 along the radial direction is 20%-30%, and the thickness of the axial reinforcing rib 25 is 1.5-2.5mm.

[0041] Specifically, the axial reinforcing rib 25 divides the transverse half pattern 23 into two parts along the axial direction, increases the contact side of the crown 11 with snow or mud or sand, thereby increasing the contact area, thereby improving the grip ability of the tire body 1 on snow, muddy ground, desert and the like. When the thickness of the axial reinforcing rib 25 is less than 1.5mm, its strength is lower, and it is easy to break during driving, reducing the contact area of the crown 11 with the road surface; when the thickness is greater than 2.5mm, the gap between the side surface of the axial reinforcing rib 25 and the side surface of the transverse half pattern 23 is smaller, reducing the cavity volume of the transverse half pattern 23 for storing snow or mud, thereby reducing the grip ability of the tire body 1 on snow or muddy ground.

[0042] When the ratio is less than 20%, the area of the transverse half pattern 23 divided into two parts is small, thereby not improving the contact area of the crown 11 with the road surface; when the ratio is greater than 30%, the aspect ratio of the axial reinforcing rib 25 increases, and it is easy to break during driving, reducing the contact area of the crown 11 with the road surface.

[0043] Further, the tread pattern 2 further includes a water absorption groove 28 formed on the circumferential surface of the crown 11, the length direction of the water absorption groove 28 is the axial direction of the tire body 1, the width of the water absorption groove 28 is 0.6-1mm, the length of the water absorption groove 28 is a zigzag design, the water absorption grooves 28 are parallel to each other, and the water absorption grooves 28 are in communication with the annular pattern 21.

[0044] Specifically, the water absorption groove 28 has a small width, which can absorb the road surface water through capillary action when in contact with the road surface water, and transport it to the annular pattern 21 for drainage, thereby improving the drainage capacity of the tire body 1 and improving the grip ability of the tire body 1 in wet conditions.

[0045] When the width is less than 0.6mm, the crown 11 in contact with the road surface will squeeze the water absorption groove 28, so that it cannot absorb the road surface water, and when the width is greater than 1mm, the width of the water absorption groove 28 is too large, so that it cannot absorb the road surface water through capillary action, thereby reducing the drainage capacity of the tire body 1.

[0046] As shown in Figure 3 The tread pattern 2 further comprises shoulder grooves 26 uniformly distributed at the positions of the shoulder 12, the radial section of the shoulder groove 26 is an arc shape with an opening facing the external environment, and shoulder protrusions 27 uniformly distributed at the positions of the shoulder 12, the radial section of the shoulder protrusion 27 is a triangle with the apex falling on the point of the shoulder 12, and the shoulder grooves 26 and the shoulder protrusions 27 are alternately and uniformly distributed at the positions of the shoulder 12.

[0047] Specifically, the side surface of the shoulder protrusion 27 can form an arc-shaped cavity with an open end with the arc-shaped groove of the shoulder groove 26, when the tire body 1 drives on soft road surfaces such as deserts, the arc-shaped cavity can be embedded in the desert to increase the contact area with the desert, thereby increasing the grip ability and off-road ability; secondly, the alternately circumferentially distributed shoulder grooves 26 and shoulder protrusions 27 can make the grip ability of the tire body 1 to the road surface uniform during rotation, thereby improving the driving experience.

[0048] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0049] The technical, shape and structure parts not described in detail in the present application are well-known technologies.

Claims

1. A high comfort, high grip, low noise all-terrain tire comprising a tire body (1) comprising a carcass (15), a sidewall rubber (16) and a belt, the belt being provided with four layers in succession, characterized in that: The tire body (1) further comprises a reinforcing rubber (17) arranged between the ply (15) and the sidewall rubber (16), one end of the reinforcing rubber (17) in the radial direction overlaps the belt, the projection of the reinforcing rubber (17) in the axial direction can cover the deformation area of the sidewall (13), the hardness of the reinforcing rubber (17) is greater than the hardness of the sidewall rubber (16) and the ply (15).

2. A tire according to claim 1, wherein: The minimum distance between the end point of the reinforcing rubber (17) in the radial direction and the end point of the belt is W1, 10mm≤W1≤20mm; and The radial diameter of the other end point of the reinforcing rubber (17) in the radial direction is greater than the radial diameter of the outer wrapping end point of the ply (15), the distance between the other end point of the reinforcing rubber (17) in the radial direction and the outer wrapping end point of the ply (15) is W2, 5mm≤W2≤10mm.

3. A tire according to claim 2, wherein: The thickness of both ends of the reinforcing rubber (17) is the same and is 0.4-0.6mm, the axial thickness of the reinforcing rubber (17) in the deformation area of the sidewall (13) is 2-3.5mm.

4. The all-terrain tire of claim 1 wherein: The contact patch rectangular rate of the tire body (1) is 70%-85%.

5. The all-terrain tire of claim 1 wherein: Further comprising a tread pattern (2) formed on the surface of the tire body (1), the tread pattern (2) comprises: At least two annular patterns (21) formed on the circumferential surface of the crown (11), the annular patterns (21) are connected end to end, the annular patterns (21) are parallel to each other, and the annular patterns (21) are grooves capable of draining water; A transverse full pattern (22) formed on the circumferential surface of the crown (11), the transverse full pattern (22) penetrates the crown (11) in the axial direction, and the transverse full pattern (22) is a groove in communication with all the annular patterns (21); and A transverse half pattern (23) formed on the circumferential surface of the crown (11), the transverse half pattern (23) is a groove in communication with a single annular pattern (21) at one end, and the other end of the transverse half pattern (23) is in communication with the external environment.

6. The all-terrain tire of claim 5 wherein: The intersection position of the transverse full pattern (22) and the shoulder (12) forms a closed reinforcing rib (24), the two end faces of the closed reinforcing rib (24) are respectively coincident with the inner side faces of the transverse full pattern (22), and the height of the closed reinforcing rib (24) in the radial direction accounts for 40%-60% of the depth of the transverse full pattern (22) in the radial direction.

7. The all-terrain tire of claim 5 wherein: The crown (11) forms an axial reinforcing rib (25) on the bottom surface of the transverse half pattern (23), the length direction of the axial reinforcing rib (25) is the axial direction of the tire body (1), the height of the axial reinforcing rib (25) in the radial direction accounts for 20%-30% of the depth of the transverse half pattern (23) in the radial direction, and the thickness of the axial reinforcing rib (25) is 1.5-2.5mm.

8. The all-terrain tire of claim 5 wherein: The tread pattern (2) further comprises water absorption grooves (28) formed on the circumferential surface of the crown (11), the length direction of the water absorption grooves (28) is the axial direction of the tire body (1), the width of the water absorption grooves (28) is 0.6-1mm, the length of the water absorption grooves (28) is zigzag design, the water absorption grooves (28) are parallel to each other, and the water absorption grooves (28) are communicated with the annular pattern (21).

9. The all-terrain tire of claim 5 wherein: The tread pattern (2) further comprises: Shoulder grooves (26) uniformly distributed at the position of the shoulder (12), the radial section of the shoulder grooves (26) is arc-shaped with the opening facing the external environment; and Shoulder protrusions (27) uniformly distributed at the position of the shoulder (12), the radial section of the shoulder protrusions (27) is triangular with the apex falling on the point of the shoulder (12), and the shoulder grooves (26) and the shoulder protrusions (27) are alternately and uniformly distributed at the position of the shoulder (12).

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